load up on the pasta. cash bow hydrates are key. on the day of the marathon, take some potassium. take some banana for potassium. you can get muscle cramps later on in the marathon. and gatorade has a lot of electrolyt electrolytes. >> during the race, you want to be hydrating. 6 to 8 ounces of water every 20 minutes. electrolytes are key, bananas, anything with potassium in it is key. you also want to on be prepared. don't be a weekend warrior and go out there and start a marathon. you have to prepare with 15 to 25 miles a week in advance. six months in advance. you'll get less injuries and less stret stress fractures that way. >> how about energy bars? does that help? >> no, not really. but what does help is the electrolytes. so you can have cliff bars because they have these